I think I figured it out. 2pi = 6.28 radians, which is 1 complete revolution. So in the power formula you have Force X Displacement. To figure out displacement in a circle you take 2pi X the # of revolutions. I get it!
The equation for power is:
F X 2pie X Revolutions
My question is, what is the 2pie for? I know that might seem obvious but I just can't see it.
thanks!
yeah but what if you change the material being used for the conveyer belt? Then obviously more variables (besides the weight of the object) are introduced. Let's say that a smoother surface is used. The object will now slide down.
In my physics book it says: "If there were no applied force (F), then Static friction force will be 0."
What confuses me is this, what if an object was sitting on a conveyer belt moving at a 30 degree angle, for instance. What causes that object to remain on the conveyer belt? obviously the...
I emailed a professor of Physics @ a University in Ohio and he had this to say:
"If your bathroom scale gives a readout in kg, then it is telling you your mass. If you want your weight in Newtons you have to multiply by 9.8 m/s^2. If your bathroom scale gives a readout in Newtons, it is...
that's sort of what I've been trying to get at this whole time. You're saying that 1kg = 9.8N.
How did we get the 1kg measurement? Obviously it had to come from weighing it on a scale to get the mass...NOT the weight. B/C if the scale gave us our weight then there would be no need to...
i'm going to try one more time to understand this.
I now understand that it is measuring your force. I see that it's dependant on the gravataional pull. The scale is reading your mass affected by gravity. So therefore, gravity is by default factored in? So that's my problem. I don't see why...
you said that you can say that you weigh 70kg or 686N...which doesn't make any sense. What can be said is that one is Mass and the other is weight, respectively. Everyone is saying that the scale measures weight, so therefore it would be more correct to say 70N. I don't get it.
I'm not trying...
um, if you're saying that it actually measures "weight" as we know it is in physics, then why not say 70N? B/C if it is truly measuring weight then the gravatational pull is already factored in...so saying 686 in that case would be incorrect.
So if I'm reading this right are you guys saying...
When I step on a scale I see that it says...70kg. We typically call this value weight? However, kg is used for "mass" and not "weight". So when we say 70kg do we mean that my mass is 70kg OR do we mean that my weight is 70 N?
So if it does mean mass, then my ACTUAL weight is 686N! lol
And...